code: def make_rng(self) -> jax.Array:
      fold_data = _stable_hash(self.counts)
      self.counts[-1] += 1
      return jax.random.fold_in(self.key, fold_data)
  
imports: from __future__ import annotations
  import dataclasses
  import hashlib
  import typing
  import jax
  import numpy
  from flax.experimental.nnx.nnx import errors, filterlib, tracers
label_desc: Use image node_id 1 for calling the RngStream obj's underlying member method code with example usage: obj.make_rng() and returns: jax